期刊
ADVANCED MATERIALS INTERFACES
卷 6, 期 23, 页码 -出版社
WILEY
DOI: 10.1002/admi.201901259
关键词
2D perovskites; metal ion doping; solar cells; stability
资金
- National Natural Science Foundation of China [U1632265, 51802194]
- Science and Technology Commission of Shanghai Municipality [17YF1412000, 19ZR1476900]
2D perovskites hold a great prospective to create highly efficient and stable solar cell devices. In order to explore their full potential, every component of 2D perovskite solar cells (PSCs) has to be carefully designed and engineered. Herein, the metal ion doping strategy is taken to optimize both the hole transport layers (HTLs) and the light absorbing layers of the BA(2)MA(3)Pb(4)I(13) (BA = butylamine; MA = methylammonium) based 2D PSC devices. The hole extraction and transport abilities are significantly enhanced by Cu ion doping in the nickel oxide layers, while the optoelectronic properties of the BA(2)MA(3)Pb(4)I(13) layers are effectively improved with Cs ion doping. The synergistic incorporations of Cu and Cs ions have boosted the device power conversion efficiency to 13.92%, the highest for 2D PSCs based on inorganic HTLs. In addition, the inorganic nature of the Cu doped nickel oxide film and the high quality of the Cs doped 2D perovskite film also endow the PSC device with extraordinary humidity and thermal stabilities.
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